Gun mount



T. J. HEAVEY Jan. 8, 1935.

GUN MOUNT Filed June 2, 1933 3 Sheets-Sheet l INVENToR. Th amas 1 1 Haavay Jan. s, 1935.l l T, J, HEM/ EY y 1,986,818

GUN MOUNT Filed June 2, 1933 3 Sheets-Sheei'I 2 INVENTOR. Thnma 1l HEavEy A TTORNEY Jan. 8, 1935.

INVENTOR.. Th mTLELS d Heavay ATTORNEY vlo Patented Jan. s. 1935 masts Gori-Moule;l

Thomas J. Heatey, :UnitedStates Army. Fort y Riley, Kans.`

Application June', 1933, Serial No. -674,054

" `1c claims. (oise-40)" l(Granteemeer the eet or` March e, 188s, as amended April'B, 1928; `3700. G. 757) `vTheinvention described herein may be :manufactured and lused. by or `forftlne'.Governmerit for governmental purposes; without the payment itc mexofany royalty thereon. i

VThis invention relates to .agun mount for light cannon :such asgthe 37 m/m caliber, land isespe cially designed `to permit. pack .transportation of the mount and gun on :asingle packanimal.

j `The vprincipal objectzof `the invention is to proe vdea light, compactmount-that Vmay be quickly foldedV into' convenientload for transportation andas quickly -arranged for firing.

yThe mou'nt is characterized by a novel `traversing mechanism `capable of being folded to a Y position alongside one of the trails and by lextensible trail vlegs automatically locked `when moved to two positions of adjustment.

l With the foregoing and other objectsin view, the invention residesin the novel arrangement and combination of partsand in the details of construction hereinafter described andclaimed, it being understood that changes in the precise embodiment of the invention 'herein disclosed maybe made within the scope of what isl'claimed without'departing fromm-the spirit ofithe invention. V.

A practical embodiment of theinventionisillustrated ain the accompanying: drawings, where- Fig. `1 is a view inlsideelevation ofthe improved gun mountI showing I th'eltraillegs ex- Fig. 2 is a plan view of Fig. 1. #Y1 i Y Fig. 3 is awdetail sectional` view 'on the line Fig. 4. is a" detail sectionalview on the ,line

of Fig. 2; v Fig. 5 isA an enlarged detail sectional View of the traversing nut taken4 on theline `5'-L.5 of' Fig. 11. Fig. 6 isa sectional view` taken onV the line 6;-6 0f Figa Fig. 7 'is a planview of one of the' extended trail legs.. i

f Fig. 8 is a view in leg of 1ig.,"1.` n.

Fig.` 9 is a View on the line 9-91of Showing the trail leeclosed- Fig. 10 is a view on the line 1li-10 ofFig. Q Fig. -llris a sectional View on the line 11-11of Fig. 2. y

Figs-..12

side eievationof the trail Fig. 8 but and 1,3 aregenlarged detail sectional views showing the screw-.shaft respectively connected to and disconnected Afrom the operating shaft.

Figs. 14` and 1'5. aresectional views on the re spective lines of Fig. Y12.

The mount is in the form of a tripod comprising a pair of traillegs A--A and a front leg B, all hingedly mounted in a well-known manner on a pintle '7. The front legwhich is extremely short isibifurcated to receive the shank 8 of a spade 9. The `.shank is `rigidly secured 'to 'the front leg by fbolts 'flo-10.Y i The trail legs A 'are similar and are formed offa frontpart 11 mounted on the pintleand Fa rear telescopic :part 12 carrying Vaspade 13 on its outer extremity. As shown in Figs. V7 and "9 the parts 11and^f12 are locked in extended and 'closed relation rby means of aglatch 14 Ipivotally mount'- ed 'in-5a bracket `15-cn the louter surface 'o'f the front part 111 and including apin 16 adapted V`to enter an aperture 17 in the front .part 11 'and' see lectively engage an aperture 18 in the rear portion of the part 12 and a semi-circular bearing 19 in the forward 4edge of the rear part 12.

In the `closed position Fig. 10"`the front end of the part 12 has been elevated by 'a ramp 20 carried by the part 11.. This 'provisionis made because of the taper of the trail leg and insures a close t to, prevent rattling. f Movementof the parts to closed-.position is limited by stops 21 'and 22,on th`e part 1l2 respectively engaging stops 28 and24'on the .part 1l. Theextension of the parts is limited by engagement of a stop 25 on the part 12 with arstop 26 on the part 11. Theq provision of the stop insures alignment ofthe `pin 1'6 of the latch with the aperture 18 and bearing 19 and enables the pin to be automatically moved therein under the influence of the latch spring 27.

Referring to .Fig. ;11,.a conventional gun supporting member 28 including an elevating mech` anism 29 is positioned between the trail legs and pivotallyv mounted onV the pintle. Thev rear or free end of this memberis formed with spaced sets of fingers 30--30 whereby it may have a sliding connection with a mechanism for traversing. said member aboutithe pintle.

@The .traversing mechanism consists of a screw shaft 31 (Fig. 6) having a reduced end on which afbushing 32 is'conned between a collar 33 and the head of a retaining screw 34. A sleeve 35 embracing the bushing and also confined between the collarand screw head is provided with truny ni0nsz3636 which when disposed vertically, are received in a bracket 37 on the `right hand trail and confined byl capl plates 38. As indicated in dotted linesA in Fig'. 2 the screw shaft is capable of being swung `to aposition along side the trail leg;

As seen most clearly in Fig. i 13 the freeend of fthe `screw shaft preferably terminates inl a semi-.cylindrical portion 39 having an aperture 40 adapted to receive a pin 41 fixed tothe semicylindrical end 42 of a shaft 43. The pin serves asa driving connection between the shafts.l The shaft/t3 is mounted in a bearing 44 .in the left hand; trail` and carries an operating hand wheel The shafts 31 and 43 are normally locked together by means of a sleeve 46 covering the joint between the semi-cylindrical ends 39 and 42. A

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pin 47 carriedbyrthe screw shaftl engages Aa cam slot 43-formedin vthe sleeve 46. Ihe sleeve includes a handwheel 49 whereby it may be' manually rotated. Upon rotating the sleeve it is conf.. strained, by virtue of the pin and cam slot arrangement, to be moved to covering or uncover-1 7 ing position relative to the joint between the A nut 50 Fig. 5 on the screw. shaftis fitted in a` housing 51 having flat upper and lower surfaces 52 and. 53-engaged by the sets of lfingers 30 ofthe gun-'supporting member 28 whereby the nut and housing are constrained against rotation and 'caused to be translated when'the screw shaft is rotated. The surfaceszand 53 are each formed with a boss 54 over whichis placed a ring 55 retained by a screw 56. Each ring 55 has a sliding fit between the fingers of each set and serves vto impart the translational movement of the housing and nut to the gun-supporting member. The screws 56 bear against the nut and hold it in place relative to the housing.

In operation when itis desired to traverse the gun-supporting member 28 the handwheel 45 may be continuously rotated to translate the nut on the screw. shaft. In order to prepare the mount for transportation the handwheel 49 is turned to move the sleeve 46 to uncovering position, whence the screw shaft may be swung rearwardly to disengage it from the gun-supporting member and position it alongside one of the trail legs. The trail legs may then be folded together.. This oper'- ation is reversed in preparing the mount for firing.

1. In a gun mount, a pintle, `a front leg mounted on the vpintle, a spade rigidly secured to the front leg, a pair of trail legs hingedly mounted on the pintle, and including extensible rear v portions, means for automatically locking lthe extensible portions in two positions of adjustment, a traversing mechanism carried by both trails and includ'- ing a separable part"swingablealongside one of the trails, and a gun-supporting member mounted on the pintle and having a ydetachable connection with the traversing mechanism.

2. In a gunv mount, a pintle,a pair of trail legs hingedly mounted on the pintle, a screw shaft mounted on one of the trail legs for *swinging movement, the free end of said shaft being semicylindrical and having an aperture, an actuating shaft mounted in the other trail leg and having a semi-cylindrical end, a pin in said end adapted to enter the aperture inthe end-of the screw shaft, a sleeve on the screw shaft' movable to covering and uncovering position relative to the joint' between the semi-cylindrical ends, a' cam slot in the sleeve, a pin on the screw shaft engageal'lle with the cam slot, a nut on the screw shaft, and a gun supporting member engageable' by the nut.

3. In a gun mount, a pintle, a pair of trail'legs hingedly mounted on the pintle, 'a screw shaft mounted on one of the trail legs for swinging movement, an actuating shaft mounted in the other trail leg, said shafts having complementary adjoining. ends, a separable driving connection between the shafts, a sleeve onthe screw shaft movable to covering and uncovering position relative to the joint between the ends ofthe shafts, a cam slot in the' sleeve, a pin'on the screw shaft .engageable with the cam slot, arnut on the screw shaft, and a gun-supporting member engageable bygthe nut.

4. In a gun mount, a pintle, a pair of trail legs A{hin'g'edly mounted on the pintle, a screw shaft "mounted on one of the trail legs for swinging gmovement, an actuating shaft mounted in the other trail leg, a separable driving connection between the shafts, a sleeve on the screw shaft movable to covering and uncovering position relative lto the joint between the ends of the shafts, a cam slot in the sleeve, a pin on the screw shaft engageable with the cam slot,'a nut 'on thescrew shaft, and a gun-supporting member engageable bythenut.

5. In a gun mount, apintle, a pair of trail legs hingedly mounted on the pintle, a screw"shaftv mounted on one of the trail legs for swinging movement, an actuating shaft mounted in the otherl trail leg, a separable driving connection between the shafts, asleevex'on the screw shaft movable to covering and uncovering positionrelative to the joint between the endsl of the shafts, cooperating' means on the sleeve and screw shaft whereby upon rotation of the sleeve it is moved longitudinally of the screw shaft, a nut on the screw shaft, and a gun-supporting member engageable by the nut.. l

6. In a gun mount, a pintle, a pair of trail legs hingedly mounted on the pintle, .a screw shaft mounted on one ofthe trail 'legs for swinging movement, an actuating shaft mounted in the other trail leg, a separable vdriving connection between the shafts, a sleeve on the screw shaft movableto covering and uncovering position relative to the joint between the ends of the shafts, a nut on thel screwfshaftyand a gun-supportin member engageable by the nut. y

7. In a gun mount,a pair of foldable trail legs, a screw, shaft-mounted'on one of the legs for swinging movement, an actuating shaft mounted in the other trailleg, a separable Adriving connection between adjoining ends of the shafts, means for locking the shafts together, and a traversing nut on the screw shaft. I

y8. In a gun mount, a pair of foldable trail legs, a screw shaft mounted on one of thelegs for swinging movement, an actuating shaft mounted in the other trail leg, means for connecting fand disconnecting adjoining ends of the shafts, and a traversing nut on'the screw shaft.

9. In a gun mount, a screw shaft, a nut onthe shaft, a housing on the nut having flat upper-and lower surfaces, a boss on each of said surfaces, a ring on each boss, a screw retaining the ring Aand bearing against the nut", a member to befmovedu with the nut including sets of spaced ngers'e'ngaging the flat upper and lower surfaces of the housing, the fingers of each set slidably receiving one of the rings. l j

10. In a gun mount, a tapered trail comprising a front part and a rear part, the rear part movable into the front part, and a ramp on one side of the front part adapted to move the inner end f the rear part against the. opposite side of said front part.

. THOMAS J. HEAVEY.

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